CNBC's Frank Holland spoke with Dave Nadig, Director of Research at ETF Trends, Jay Rhame, CEO of Reaves Asset Management, and Kathleen Smith, Chairman and Co-founder of Renaissance Capital. They discussed the big questions ETF investors are facing in the second half - including the value vs. growth debate, how China's regulatory crackdown could affect major IPOs like Didi Chuxing, and the ripple effects of President Joe Biden's historic infrastructure bill. Hosted by Simplecast, an AdsWizz company. See https://pcm.adswizz.com for information about our collection and use of personal data for advertising.